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Finding the Fourth Proportional to 352.13, 528.27 and 121.19

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Solution

The fourth proportional to 352.13, 528.27 and 121.19 is: 181.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.13 : 528.27 = 121.19 : x
  2. Step 2: Convert to fraction form
    352.13/528.27 = 121.19/x
  3. Step 3: Cross multiply
    352.13x = 528.27 × 121.19
  4. Step 4: Simplify right side
    352.13x = 64,021.04
  5. Step 5: Solve for x
    x = 64,021.04/352.13
  6. Step 6: Final answer
    x = 181.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.